21280500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{4729}}^1$

素因数の和:4754

約数の個数: 72

約数和(自身を含む): 67147080

約数和(自身を除く): 45866580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 225, 250, 300, 375, 450, 500, 750, 900, 1125, 1500, 2250, 4500, 4729, 9458, 14187, 18916, 23645, 28374, 42561, 47290, 56748, 70935, 85122, 94580, 118225, 141870, 170244, 212805, 236450, 283740, 354675, 425610, 472900, 591125, 709350, 851220, 1064025, 1182250, 1418700, 1773375, 2128050, 2364500, 3546750, 4256100, 5320125, 7093500, 10640250, 21280500]

約数ペア:

[(1, 21280500), (2, 10640250), (3, 7093500), (4, 5320125), (5, 4256100), (6, 3546750), (9, 2364500), (10, 2128050), (12, 1773375), (15, 1418700), (18, 1182250), (20, 1064025), (25, 851220), (30, 709350), (36, 591125), (45, 472900), (50, 425610), (60, 354675), (75, 283740), (90, 236450), (100, 212805), (125, 170244), (150, 141870), (180, 118225), (225, 94580), (250, 85122), (300, 70935), (375, 56748), (450, 47290), (500, 42561), (750, 28374), (900, 23645), (1125, 18916), (1500, 14187), (2250, 9458), (4500, 4729)]